Chris Watt practices at right guard

Chris Watt played left guard in his final three seasons at Notre Dame. In his first Chargers practice Friday, the third-round draftee was at right guard.

Watt said he last played right guard as a freshman.

"It was a little different," he said of Friday's experience, "but I was able to pick up on it, I felt like, pretty good."

The Chargers prepare their blockers at several spots. Expect Watt to practice at left guard and center as well, and tackle perhaps. Tom Telesco, after drafting him 89th, said Watt has the smarts, quickness and toughness to give line coach Joe D'Alessandris several options.

It'll be interesting to see, however, who becomes the first backup to right guard Jeromey Clary.

Johnnie Troutman, in what amounted to his rookie season, had success filling in for left guard Chad Rinehart last season. Troutman looked less comfortable at right guard, though, when he replaced Clary in the Divisional Playoff. The decision to put him there was a curious one because Rinehart, a veteran starter, had played right guard and Troutman's starts were at left guard.

The move didn't go as planned, at least initially. Broncos defenders surged through the line's right side a few times in the first half. In fairness to Troutman, communication glitches may have contributed and the tackle next to him, rookie D.J. Fluker, labored due to an ankle injury.

Troutman played exclusively at left guard at Penn State, according to his college bio.

Watt played in 50 games with Notre Dame. The 24-year-old appears to be fit.

"I was lucky during the whole combine circuit that I had around seven or eight offensive line coaches come work me out, so I felt like I stayed in pretty good shape pretty much the whole time," said the 6-foot-2 1/2, 311-pounder. "I felt pretty good out there today. Obviously football shape is a lot different than running drills."